Duct connector



FIG. 1 is a perspective view of a duct connector;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a bottom view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a first side view thereof; and,

FIG. 7 is a second side view thereof.

The features shown in broken lines depict environmental subject matteronly and form no part of the claimed design.

We claim the ornamental design for a duct connector, as shown and described. 